Arc-welding electrode-holder.



- J. E. PIERCE.

ARC WELDING ELECTRODE HOLDER.

APPLICATION FILED NOV. I2. 1918.

Patented Feb. 4, 1919.

amen/5oz Gam a,

JZFz/ w JAMES EDWARD PIERCE, OF ALBION, MICHIGAN.

ABC-WELDING ELECTRODE-HOLDER.

Specification of Letters Patent;

Patented Feb. 4, 1919.

Application filed November 12, 1918. Serial No. 262,201.

To all whom it may concern Be it known that I, JAMES E. PIERCE, acitizen of the United States, residin at Albion, in the county ofCalhoun and tate of Michigan, have invented a new and useful Arc-WeldingElectrode-Holder, of which the following is a s ification.

The subject of t is invention is an arc welding electrode holder.

The main object of the invention is the provision of a holder which maybe readily and easily opened to receive the electrode, and which willafford safety to the operator or user.

Another object of the invention is the provision of a holder which maybe easily disassembled for the removal and replacement of parts.

Another object of the invention is the provision of connecting meanswhereby the cable or conductor may be connected to the holder.

The invention also contemplates generally improving the construction andenhancing the utility of electrode holders.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the comination andarrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of the invention.

A practical structure for carrying out the invention is illustrated inthe accompanying drawing, wherein:

Figure l is a View in elevation of a holder constructed in accordancewith the invention; I

Fig. 2 is a longitudinal section of the same;

Fig. 3 is an enlarged detail view in perspective of the push rod or bar.

- Referring to the drawing by numerals of reference In carrying out theinvention there is provided a handle 1, preferably formed of wood,though any insulating material would be adapted for the purpose, whichis formed with a longitudinal bore for the reception of a rod 2.

The rod 2 is formed of any good conducting material, preferably copper,and extends forwardly of the handle '1 for a suitable dlstance and isprovided with an enlarged portion or head 3 at its extended end. nor thepurpose of holding the rod or conductor 2 in place in the handle, therod is tapped diametrically for the reception of a screw 4 which entersthe tap through a suitable opening formed radially in the handle. Thehead of the screw 4 is sunk sufficiently below the surface of the handleto prevent contact with the hand of the operator.

That end of the rod or conductor 2 which extends from the rear end ofthe handle is threaded to engage the interior threads of theinteriorly-exteriorly threaded coupling nut 5, which is threaded on theextending end of the rod 2 and the forward face of which rests firmlyagainst the rear end of the handle. The exteriorly threaded portion ofthe coupling nut 5 is engaged by the interiorly threaded end of atubular connector 6, the opposite end of which is formed with a flaringmouth, as indicated at 7. A cable 8 has its end inserted through theflaring mouth of the connector, and a wedge pin 9 is driven in from theopposite end of the connector between the exposed ends of-the wire ofthe cable to bind the cable and connector firmly together.

The flaring mouth of the connector avoids a tight binding edge at theplace where the cable emerges from the connector against which the cablewould be bent as the holder was moved from place to place, and whichwould cause a breakage of the cable at that location. The wedge pinconnection makes it possible to readily cut off the end of the cable,when broken, drive the end and pin out the connect-or 6, and insert thenew end of the cable and the wedge pin. This makes a rapid method ofrepairing the connection without the use of solder or other bindingmeans.

A sleeve 10 incloses the forwardly projecting portion of the rod 2 andhas a close slidin fit on the head 3 thereof. This sleeve is pre erablyformed with an enlarged portion or head 11 at its forward end, and inthis portion is provided a slot 12, which is disposed at an incline, asshown, and into which the forward end of the head 3 projects undernormal conditions.

In order that the sleeve 10 may be retained in its normal rearwardposition, a compression spring 13 encircles the for- 'wardly extendingportion of the rod 2 and The handle 1 is provided with a slot 16,

formed at its forward end and extending for a short distancelongitudinally thereof, and this slot registers with a slot 17, formedin'the rear end of the sleeve 10, of which it extends longitudinally fora short distance.

A housing or casing 18 is provided on the sleeve 10, adjacent its rearend, and this casing enters the forward end of the slot 16 when thesleeve is in normal position.

push bar 19 is loosely'mounted in the housing 18, and the bifurcatedrear end of the push bar straddles a lug or finger 20, which projectsfrom a trigger 21, of wood fiber or other suitable insulating material.

' A split collar 22 encircles the handle 1 ad jacent its forward end,and is preferably positioned in an annular groove formedcircumferentially of the handle. The collar is formed. with outturnedapertured cars 23 between which the trigger 21 is mounted, being pivotedon a screw pin 24 which engages the ears and binds the collar in place.

The operation is as follows The device is disassembled by removing theconnector 6 and the coupling nut 5. The

screw 4 is then threaded out and the sleeve 10'and rod 2 withdrawn fromthe handle 1. The socket wrench may then be slipped on the rod 2 and itsprongs forced into the notches 15 of the threaded sleeve 14 andthesleeve backed out of the sleeve 10. The rod 2 and spring 13 may now bewithdrawn from the sleeve 10. r

In assembling the device, it is preferably held lower side up, asindicated or shown in Fig. 2. The rod 2 and spring 13 are inserted inthe sleeve 10 and the threaded sleeve 14 screwed into the sleeve 10until a proper tension of the spring 13 is had. Place the push bar 19 inthe housing 18 and insert the rod 2 in the handle 1. Thread the couplingnut 5 on the end of rod 2, and

pull the trigger 21 to throw the sleeve 10 forward and insert anelectrode wire 25 in place in the groove 12. This relieves the tensionon the handle 1 and permits the screw 4 to be easily screwed in. Thecable may now be connected and the holder is ready for use.

As will be understood from the foregoing,

the trigger is pulled to move the sleeve 10 forwardly, which drawsthe'head 3 ofthe place.

The sleeve 14, as will be rod 2 free from the slot 12 and permits.

electrode wire 25 to be readily inserted in It is evident that theholder is so constructed that the hand of the operator is thoroughlyinsulatedfrom the current carrying'rod 2. It is also apparent that theoperation of the device is readily accomplished without necessity forthe operator to shift his hand, as the trigger is within easy reach ofhis finger. It isfurther seen that there are no riveted parts in thedevice which are difficult to repair, and that the current is carrieddirectly to the electrodes with no chance for short circuiting orheating of the handle.

Having described myinvention, what is claimed as new is V p 1. An arcwelding electrode holder, including a handle having a longitudinal bore,a rod in the bore and extending forwardly of the handle, a coupling nutthreaded on the rear end of the rod, a connector threaded on the nut, acable secured in the connector, a sleeve inclosing the forwardlyprojecting portion of the rod and provided with a slot adjacent theforward end thereof into which the forward end of the rod normallyprojects, resilient means for retaining the sleeve. in its rearmostposition, and a trigger for moving the sleeve against the tension of theresilient means to withdraw the rod from the slot.

necting a conductor to the rear end of the rod, a sleeve inclosing theforwardly projecting portion of the rod and slidable rectilinearlythereon, said sleeve having a slot adjacent its forward end into whichthe rod projects, means for retaining the sleeve, normally, in itsrearmost position to project the rod into the slot, and means forsliding the sleeve-forwardly upon the rod to withdraw the rod from theslot whereby an electrode may be placed in the slot.

3' An arc welding electrode holder, including ahandle, a conductor rodcarried by the handle, means for connecting a cable to the conductorrod, a sleeve inclosing a portion of the rod and slidable longitudinallythereof, said sleeve having a slot adj acent its forward end into whichthe end of the rod normally projects, means for normally retaining thesleeve in position with sleeve inclosing the forwardly projectingportion of the rod and slidable longitudinally thereof, said sleevehaving a slot into which the forward end of the rod projects,

' means for normally holding the sleeve in position with the rodextending into the slot, and a trigger carried by the handle andoperable to slide the sleeve longitudinally of the rod to Withdraw theend of the rod from the slot.

5. An arc welding electrode holder, including a handle, a conductor rodcarried by the handle and extending forwardly thereof, there being anenlarged head at the forward end of the rod, a sleeve housing the for-Wardly projecting portion of the rod and slidable longitudinallythereon, the said sleeve having a slot into which the forward end of therod projects, aspring encircling the rod and abutting the head at itsforward end, means in the sleeve and engaging the spring to confine thespring within the sleeve, and operable to regulate the tension of thespring, the said spring normally retaining the sleeve in its rearmostposition to project the rod into the slot, and a trigger carried by thehandleand engaging the sleeve and operable to slide the sleevelongitudinally of the rod to withdraw the rod from the slot.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

JAMES EDWARD PIERCE.

Witnesses:

- H. G. PIERCE,

- C. G. GREGOROFF.

